Changjun High School (simplified Chinese: 长郡中学; traditional Chinese: 長郡中學, literally Changsha County High School), also known as Changjun (长郡) is a key model high school in Hunan Province.

In a 2016 ranking of Chinese high schools that send students to study in American universities, Changjun High School ranked number 33 in mainland China in terms of the number of students entering top American universities.

In 1912, after the prefectural system was abolished, Hunan Changjun state-owned High School was founded based on the prefectural school.

It cost 320 million yuan and was invested by Changsha Municipal Government.

Changjun 2 campuses in the east and west of Xiangjiang River take off together and the school’s development has turned a new page.